Casio Oceanus Retro Tone Collection Debuts in Japan With Limited-Edition Titanium Watches
Casio is expanding its premium Oceanus watch lineup with a new two-model Retro Tone Collection, bringing refined titanium construction, solar-powered performance, and limited-edition exclusivity to the Japanese market.
The new collection focuses on a distinctive half-matte gradient dial designed to shift in appearance as light moves across the surface. The effect gives each watch a subtle vintage-inspired character while keeping the clean, modern styling associated with the Oceanus series. Casio pairs the dials with vegetable-tanned leather straps from Tochigi Leather Co., a respected Japanese leather maker. These straps are designed to develop a richer tone over time, giving each watch a more personal look as it ages.
Both models are scheduled to launch in Japan in August 2026, and each will be produced in limited numbers. While they share similar design language and premium materials, the two watches differ significantly in features, size, and price.
The more exclusive model is the Casio Oceanus Manta S400 Series OCW-S400RL-8AJR. Limited to just 300 pieces, it is priced at ¥165,000, or approximately $1,043. This model features a lightweight titanium case and a sapphire-glass bezel ring finished with rose-gold ion plating, giving it a warmer and more luxurious appearance.
The Manta model measures 46.5 x 41.3 x 9.2 mm and weighs only 38 grams, making it impressively slim and light for a premium solar radio-controlled watch. It is also the more advanced of the two in terms of connectivity. Along with Multi-Band 6 radio time calibration, it supports Bluetooth pairing through Casio’s companion app. This enables automatic time adjustment and adds useful functions such as phone-finding.
The second model, the Casio Oceanus Classic Line OCW-T2600RL-3AJR, will be available in a slightly larger run of 500 pieces. It is priced at ¥115,500, or around $730. Unlike the Manta version, this model does not include Bluetooth connectivity. Instead, it focuses on standalone functionality, offering 29-city world time, a 1/20-second stopwatch, and radio-controlled timekeeping support across Japan, North America, Europe, and China.
The Classic Line model has a larger titanium case measuring 48.2 x 42.8 x 10.7 mm and weighs 49 grams. While it is heavier than the Manta, it remains relatively lightweight thanks to its titanium build. It also uses Casio’s Tough Solar system, allowing the watch to run efficiently on light without frequent maintenance.
Both watches include several premium features expected from the Oceanus range. Each model uses Casio’s Titanium Carbide surface treatment to improve scratch resistance, helping preserve the finish during daily wear. Both also come with double-sided anti-reflective sapphire crystal, improving dial visibility while adding durability.
Battery performance is another strong point. On a full charge with no additional light exposure, both models can operate for roughly five months. When power-saving mode is activated, the Manta can last up to 19 months, while the Classic Line can stretch to approximately 22 months.
The Casio Oceanus Retro Tone Collection is currently planned for Japan only, with pre-orders already open through Casio’s Japanese retail channels. There is no confirmation yet on whether either model will be released internationally.
With its combination of titanium construction, solar-powered technology, radio-controlled accuracy, and aging leather straps, the new Oceanus Retro Tone Collection is aimed at collectors who appreciate Japanese watchmaking, understated luxury, and limited-production designs.
